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In each issue of YES Mag: The Science
Magazine for Adventurous Minds, the “Bug Beat” features
one bug, some of its special feats and usually, a sample of the folklore
that surrounds it. Here you’ll find answers to questions that
might bug you about the “Bug Beat”...and about bugs in
general. |
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What’s the beat in the “Bug Beat”?
You’ve heard of news reporters who write regularly about crime.
They’re said to cover the crime beat. The “Bug Beat”
gets it name because it always covers a bug of some kind.
What is a bug anyway?
A bug can be a problem with your computer...a spy tool that secretly
records conversations...a germ that makes you sick...even a compact
car. “Bug” also means any little, creepy-crawly critter
— insect or non-insect. Scientists who study insects (entomologists)
reserve the word for a “true bug”, such as a stink bug.
One of a true bug’s chief features is its beaklike “mouth”.
Other people, including the “Bug Beat” writer, simply
use “bug” as a friendly word for “insect”.
So what’s an insect?
It’s a small critter whose adult body comes in three parts:
head, middle (thorax) and end (abdomen). It has six legs, usually
two feelers (antennae) and often two or four wings. Contrast that
with a spider, a non-insect with two body parts, eight legs, no
antennae and no wings.
Depending on the kind (species) that hatches out of an egg, an
insect commonly grows by
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shedding its tough outer layer (exoskeleton) several times,
often changing from a wingless young (nymph) into a winged
adult, OR
• developing from a feeding stage (larva) to a resting/changing
stage (pupa), then to an adult.
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But even the insect with the biggest adult body mass in the world
— the Goliath beetle (13x5 centimetres) — is still relatively
small, like all bugs are. |
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Why do amazing feats seem almost common among
bugs?
Well, get this: there are more species of bugs on this planet than
all other animal species put together. Entomologists have identified
about a million insect species, but they know there are many more
— possibly 10 to 30 million in total!
Each bug species can create huge populations. Many lay masses of
eggs and lay them frequently. Entomologist D.J. Borror figured that
ordinary fruit flies — starting with one pair and ideal conditions
— could produce enough generations in a year to make a tightly
packed fruit-fly ball big enough to touch the Sun from here!
Among so many insects and all that variety, you'd expect to find some
truly amazing feats. Just the same, it’s jaw-dropping to consider
that a blow fly travels a distance 300 times its length in the time
that it takes a cheetah (the fastest mammal) to travel only 18 times
its length. Or that a single ant colony in Europe has measured 6000
kilometres long. Or that some species of cicadas can be louder than
subway trains. That’s what makes bugs sooo fascinating. |
| Why is there plenty of folklore
about bugs?
Bugs live everywhere — from mountain tops to deep caves, from
deserts to ice fields, from puddles to oceans, from forests to plains.
They’re also in backyards and houses — including yours.
Because bugs are so common the world over, they are bound to show
up in the folklore of almost every country.
People frequently link insects with events that occur whenever
the bugs happen to be around. A ladybug crosses the hand of a woman
just before she becomes engaged to be married and — poof —
the ladybug’s stroll is believed to predict a wedding.
Other folklore is based on a bug’s appearance. Butterflies
are generally considered beautiful and often linked with positive
things, such as good luck. But the frightening head and darting
flight of a dragonfly have helped create bad-luck stories of a monster
that attacks children who misbehave.
Of course, insects are neither lucky nor unlucky. Nor do their
actions ever predict human events such as weddings. Bugs simply
do what bugs do. And for us humans, that’s astonishing enough!
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About
the Author
Bugs have fascinated Diane Swanson since she was a little kid in Lethbridge,
Alberta. Since then, they have appeared in several of the 65 books
and 400 magazine articles she has had published. In fact, the first
magazine article she ever wrote for young readers was about ladybugs.
Now a resident of Victoria, British Columbia, Diane continues her
interest in bugs by writing the “Bug Beat” for each issue
of YES Mag: The Science Magazine for Adventurous Minds. |
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